Boiler cleaner



June 2, 1936. 1.. c. BROWN 2,043,150

' BOILER CLEANER Filed Dec. 4, 1934 I 2 Sheet-Sheet 1 ATTOR N EY June 2,1936. c, BROWN 2,043,150

'- BOILER CLEANER Filed Dec. 4, 1934 2 Sheets-Sheet .2

M AOWQQZ Kk gUkMIL/M ATTO RN EY Patented June 2, 1936 UNITED STATESPATENT OFFIQE BOILER CLEANER Lucian Clark Brown, La Feria, Tex.

Application December 4, 1934, Serial No. 755,973

2 Claims.

The object of this invention is to provide simple means for mechanicallyremoving from the water in a steam boiler those impurities which, if notremoved, form scale upon the flues and walls of the boiler, and byinterfering with the transmission of heat to the water, retard theproduction of steam and cause a waste of fuel. The invention isillustrated in the accompanyingdrawingsand consists in certain novelfeatures which will be hereinafter first fully described and then moreparticularly defined in the appended claims.

In the drawings:

Figure 1 is a plan view of the improved device in position in a boiler.

Figure 2 is a side view of the same.

Figure 3 is a transverse section.

Figure 4 is a plan view of a portion of the device on a larger scale.

Figure 5 is a longitudinal section of the same.

Figures 6, 7 and 8 are transverse sections on the lines 6-6, 1-1 and8-8, respectively, of Figure 5.

Figure 9 is an edge view of a cover or top member.

The boiler l with the fines 2 may be of any known or preferreddimensions and arrange ment and are shown in a conventional manner only.

According to the present invention, boxes 3 of oblong form are placedupon the uppermost flues and are arranged in two or more parallelseries, as shown in Figure 1. The boxes nearest the front end of theboiler having their front ends connected by a cross pipe 4 which iscoupled to a pipe 5 leading through the front end of the boiler andconnected by a valve 5 with a blowoff nozzle 1. The front ends of allthe boxes are tapered to form spouts 8, the spouts on the front boxesbeing coupled to the pipe 4 and the spouts of the intermediate andrearmost boxes being each engaged in an opening in the rear wall of thebox immediately in front of it, and lock nuts 9 are mounted on thespouts to prevent their premature or accidental withdrawal. The rear endwall ll] of the rearmost boxes are imperforate,

as shown in Figures 5 and 8. Removably secured upon each box by screwsII, is a cover or top !2 having transverse slots !3 therein and having adepending flange or plate M at the rear of each slot, the front face ofthe flange being flush with the rear wall of the slot, as clearly shownin Figure 5. Bosses l5 are formed on the cover at its rear end and pipesl6 are threaded into said bosses and rise therefrom.

55 The boxes are set in place with their tops at the water level in theboiler and the pipes l6 ex-. tending into the steam space of the boiler.As the water heats, it will circulate and the impurities rise to itssurface in a scum which will float over the boxes and drop through theslots in their tops, the flow being from the front of the boiler towardthe rear thereof. The matter deposited in the boxes is permitted toaccumulate until the valve 6 is opened whereupon the steam will enterthrough the pipes l6 and blow the accumulations 10 out through thedischarge nozzle 1. It will be noted that the several flanges I4 dependclose to the bottoms of the boxes and their lower edges are turnedforward so that the entering scum will be directed toward the front endsof the boxes and 15 the steam which is admitted to blow out theaccumulation will be caused to flow over the bottoms of the boxes andoperate with a high degree of efliciency. It will be noted, uponreference to Figure 1, that the slots in the front boxes are 20relatively narrow and that the slots in each box to the rear are widerthan the slots in the box in front of it, this arrangement minimizingthe noise at the front of the boiler and providing larger exits at therear where the water agitation 25 is less pronounced. It is also to benoted that each box discharges through a tapered nozzleso that thedischarged matter will enter the next forward box with considerablevelocity which will carry it well forward of the steam entering 30 thatbox. As the covers are removable, a cover having slots of any desiredwidth may be placed on any box so that any demand may be met accordingto the size of the boiler, the nature of the water, and any othercontrolling conditions. 35

Having described my invention, what I claim is:

1. A boiler-cleaning apparatus comprising a plurality of boxes arrangedend to end and adapted to be supported upon the uppermost flues of theboiler, a slotted scum collecting top on each box, 40 a steam pipeentering the top at the rear end of each box, a valve controlled outletfor the frontmost box, the rearmost box having an imperforate rear endand each of the other boxes having an opening in its rear end, and atapered nozzle on the front end of each box having the smallest endsecured in the opening in the box in front of it so that the dischargedmatter will enter the next forward box with considerable velocity whichwill carry it well forward of the steam entering that box.

2. A boiler-cleaning apparatus comprising a series of boxes arranged endto end, the rearmost box having an imperforate rear end and each of theother boxes having an opening in its rear end,

a. tapered nozzle on the front end of each box having the smallest endsecured in the opening in the box in front of it, a scum collecting topon each box, and a steam pipe entering each top near 5 the rear end ofthe box, said tops having transverse slots with the slots in the top ofeach box wider than the slots in the top of the box next in front sothat noise will be minimized at the front of the boiler and largerentrance slots for material will be provided at the rear of the boilerwhere the water agitation is less pronounced.

LUCIAN CLARK BROWN.

